JIT

gh-131798: JIT: Narrow the return type of `isinstance` for some known arguments #3471

Job	Run time
Interpreter (Debug)	10m 6s
i686-pc-windows-msvc/msvc (Debug)	4m 32s
i686-pc-windows-msvc/msvc (Release)	4m 47s
x86_64-pc-windows-msvc/msvc (Debug)	5m 13s
x86_64-pc-windows-msvc/msvc (Release)	5m 3s
aarch64-pc-windows-msvc/msvc (Debug)	4m 19s
aarch64-pc-windows-msvc/msvc (Release)	5m 10s
x86_64-apple-darwin/clang (Debug)	19m 43s
x86_64-apple-darwin/clang (Release)	11m 31s
aarch64-apple-darwin/clang (Debug)	11m 23s
aarch64-apple-darwin/clang (Release)	9m 43s
x86_64-unknown-linux-gnu/gcc (Debug)	10m 59s
x86_64-unknown-linux-gnu/gcc (Release)	6m 28s
aarch64-unknown-linux-gnu/gcc (Debug)	7m 15s
aarch64-unknown-linux-gnu/gcc (Release)	6m 11s
	2h 2m 23s

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